SINGAPORE (Reuters) - Asian stocks stuttered on Wednesday, while the safe-haven gold was stuck near record highs as a nervous world awaited details of U.S. President Donald Trump's tariff plans, with investors fretting about the risks of an intensifying global trade war.

Investor focus in recent weeks has been firmly on the new round of reciprocal levies that the White House is due to announce on Wednesday at 2000 GMT and which are expected to take effect immediately after Trump announces them.

Trump has already imposed tariffs on aluminium, steel and autos, along with increased duties on all goods from China that have rattled markets as fears grow a full-blown trade war could trigger a sharp global economic slowdown.

Asian stocks fell in early trading, after a choppy U.S. session. Japan's Nikkei slipped 0.3% and South Korea's benchmark index was 0.57% lower.

On Wall Street, the benchmark S&P 500 and the Nasdaq ended higher after losing ground earlier in the session. The Dow finished a shade lower.

"We find our trading environment in a state of chop, with the whippy price action across markets being thematic of market players massaging exposures around the edges and not wanting to commit," said Chris Weston, head of research at Pepperstone.

Chinese stocks opened slightly mixed, with the blue-chip index up 0.14%. Hong Kong's Hang Seng was 0.3% lower in early trading.

"Trump has called April 2 'Liberation Day' but it is unlikely that investors will truly be liberated from tariff uncertainties," said Vasu Menon, managing director of investment strategy at OCBC.

"If countries retaliate, Trump could up the ante - this possibility will probably continue to keep investors nervous."

Beyond the tariff news, investors are increasingly worried by signs of rising prices, slowing growth and cracks in the labour market.

Data showed U.S. manufacturing contracted in March after growing for two straight months, while a measure of inflation at the factory gate jumped to the highest level in nearly three years amid rising anxiety over tariffs on imported goods.

"Tariffs are meant to reinvigorate U.S. manufacturing, but there is more concern about what they mean for supply chains and the prospect of foreign retaliation right now, amidst signs of a cooling domestic economy," ING economists said in a note.

A report from the Labour Department also showed on Tuesday U.S. job openings fell in February by 194,000 to 7.568 million as uncertainty surrounding tariffs squelched labour demand.

The yield on the benchmark U.S. 10-year Treasury note was at 4.189% in Asian hours having slid to 4.133% on Tuesday, its lowest level since March 4.

The currency markets remained muted, with most pairs trading in tight ranges. The euro was steady at $1.079125, while sterling changed hands at $1.29125. The yen was a shade weaker at 149.83 per dollar.

The spotlight though will remain on tariff details, especially after a media report said Trump's aides are considering a plan that would raise duties on products by about 20% from nearly every country, rather than targeting certain countries or products.

"We head into Trump's moment to shine with many having already deleveraged to run as flat or neutral a position as they can in equity, the USD (dollar) and Treasuries." Pepperstone's Weston said

The price of gold, viewed as a safeguard against financial and political stress, remained well bid at $3,132.43 per ounce, up 0.7% and just below the record high touched in the previous session. [GOL/]